Brake equipment for a hydraulic vehicle brake system

Abstract

Brake equipment for a hydraulic vehicle brake system which has an actuating assembly and a feed pump secured elastically thereon. The two communicate with one another via at least one suction and pressure line each. To assure an inexpensive, dependable flexible line connection between component parts that move relative to one another, the suction and pressure lines are embodied as housing bores in the assembly and pump housings and for a liquid-tight connection of two successive housings bores at a time extending in the course of the lines in the assembly housing on the one hand and in the pump housing on the other, at least one connecting tube is disposed in two flush bearing bores in the assembly housing and in the pump housing. The connecting tube rests pivotably and longitudinally displaceably in the bearing bores sealing off the bearing bores.

What is claimed and desired to be secured by Letters Patent of the United States is: 
     
       1. Brake equipment for a hydraulic vehicle brake system, including an assembly housing and an electrically driven feed pump in a feed pump housing which is suspended in elastic bearings on said assembly housing in which said pump communicates with said assembly housing via at least one pressure line, said assembly housing and said pump housing includes suction and pressure lines which comprise housing bores, connection bores and bearing bores, said housing bores being in said pump housing and communicating with said pump, said connection bores being in said assembly housing, at least one connecting tube (50) being disposed in sets of two of said bearing bores which are flush with one another, one of which is disposed in the assembly housing and the other of which is disposed in said pump housing, assembled in a pivotable and longitudinally displaceable manner sealing off said bearing bores; said assembly housing and said pump housing being capable of executing a limited relative movement with respect to one another; and a respective one of said housing bores and said connection bores communicating through associated sets of bearing bores with the end of said connecting tube axially remote from the connection bore being sealed off. 
     
     
       2. Brake equipment as defined by claim 1, in which said connecting tube (50) includes ball-like enlargements (52) near opposite face ends, and for sealing off the bearing bores (33, 391; 34, 392) said connecting tube includes sealing ring (54) resting in an outer groove (53) in each enlargement (52), and that at least a part of the contour of the enlargment that extends on the sealing ring sides remote from the end face of the connecting tube (50) is spherically embodied. 
     
     
       3. Brake equipment as defined by claim 2, in which a part of the contour of the enlargement that extends on the sealing ring sides facing the end faces of the connecting tube (50) is conically embodied. 
     
     
       4. Brake equipment as defined by claim 2, in which said sealing rings (54) each extend along an equator of the spherical enlargements (52). 
     
     
       5. Brake equipment as defined by claim 3, in which said sealing rings (54) each extend along an equator of the spherical enlargements (52). 
     
     
       6. Brake equipment as defined by claim 2, in which said connecting tube (50) is embodied as an aluminum tube. 
     
     
       7. Brake equipment as defined by claim 1, in which said elastic bearings for suspending the pump housing (20) on the assembly housing (12) have sheaths (42) of rubber-elastic material, and that each sheath (42) surrounds a connecting tube (50) with radial play and is fastened in opposed annular enlargments (40, 41) of the bearing bores (391, 33; 392, 34) that are flush with one another in the assembly housing and pump housing (12, 20). 
     
     
       8. Brake equipment as defined by claim 1, in which said assembly housing (12) has a continuous longitudinal recess (35) of approximately U-shaped cross section, into which at least part of the pump housing (20) protrudes with play, that in each of the housing parts (121, 122) of the assembly housing (12) that define two legs of a recess (35), at least two bearing bores (38, 39) are disposed, which are each flush with the respective bearing bore (39, 38) of the opposed, leg-defining housing part (122, 121) and with the at least two bearing bores (33, 34) in the inserted pump housing (20), and that in each of the respective three bearing bores (38, 33, 39; 38, 34, 39) flush with one another, two connecting tubes (50, 51) abutting one another at their face ends rest in the bearing bores (33, 34), one of each pair of connecting tubes protruding into a different bearing bore (38 or 39) of the assembly housing (12). 
     
     
       9. Brake equipment as defined by claim 8, in which said bearing bores (39) in one leg-defining housing part (122) are embodied as blind bores, in the bore bottom of each of which one housing bore (47, 48) belonging to the assembly housing discharges, and that the bearing bores (38) in the opposed leg-defining housing part (121) are embodied as through bores, which on an end remote from the pump housing (20) are closed off in a liquid-tight manner by means of a cap (45). 
     
     
       10. Brake equipment as defined by claim 8, in which a diametrical transverse groove (55) extends in each face end of the connecting tubes (50, 51). 
     
     
       11. Brake equipment as defined by claim 9, in which a diametrical transverse groove (55) extends in each face end of the connecting tubes (50, 51). 
     
     
       12. Brake equipment as defined by claim 8, in which each of the connecting tubes (50, 51) is surrounded with play by a rubber-elastic sheath (42), each of which forms an elastic bearing for a feed pump (11) in an actuating assembly (10). 
     
     
       13. Brake equipment as defined by claim 9, in which each of the connecting tubes (50, 51) is surrounded with play by a rubber-elastic sheath (42), each of which forms an elastic bearing for a feed pump (11) in an actuating assembly (10). 
     
     
       14. Brake equipment as defined by claim 10, in which each of the connecting tubes (50, 51) is surrounded with play by a rubber-elastic sheath (42), each of which forms an elastic bearing for a feed pump (11) in an actuating assembly (10). 
     
     
       15. Brake equipment as defined by claim 11, in which each of the connecting tubes (50, 51) is surrounded with play by a rubber-elastic sheath (42), each of which forms an elastic bearing for a feed pump (11) in an actuating assembly (10). 
     
     
       16. Brake equipment as defined by claim 6, in which a dual-circuit brake system includes an assembly housing (12), two separate reservoir chambers (14), two separate pressure chambers (15), and a total of eight bearing bores (38, 39) flush with one another in pairs and said pump housing (20) includes a total of four bearing bores (33, 34) which are each aligned in the longitudinal axis with the bearing bores (38, 39) flush with one another in pairs in the assembly housing (12). 
     
     
       17. Brake equipment as defined by claim 12, in which a dual-circuit brake system includes an assembly housing (12), two separate reservoir chambers (14), two separate pressure chambers (15), and a total of eight bearing bores (38, 39) flush with one another in pairs and said pump housing (20) includes a total of four bearing bores (33, 34) which are each aligned in the longitudinal axis with the bearing bores (38, 39) flush with one another in pairs in the assembly housing (12). 
     
     
       18. Brake equipment as defined by claim 13, in which a dual-circuit brake system includes an assembly housing (12), two separate reservoir chambers (14), two separate pressure chambers (15), and a total of eight bearing bores (38, 39) flush with one another in pairs and said pump housing (20) includes a total of four bearing bores (33, 34) which are each aligned in the longitudinal axis with the bearing bores (38, 39) flush with one another in pairs in the assembly housing (12). 
     
     
       19. Brake equipment as defined by claim 14, in which a dual-circuit brake system includes an assembly housing (12), two separate reservoir chambers (14), two separate pressure chambers (15), and a total of eight bearing bores (38, 39) flush with one another in pairs and said pump housing (20) includes a total of four bearing bores (33, 34) which are each aligned in the longitudinal axis with the bearing bores (38, 39) flush with one another in pairs in the assembly housing (12). 
     
     
       20. Brake equipment as defined by claim 15, in which a dual-circuit brake system includes an assembly housing (12), two separate reservoir chambers (14), two separate pressure chambers (15), and a total of eight bearing bores (38, 39) flush with one another in pairs and said pump housing (20) includes a total of four bearing bores (33, 34) which are each aligned in the longitudinal axis with the bearing bores (38, 39) flush with one another in pairs in the assembly housing (12).